- The caller's voice is detected and enhanced in noisy environments. This feature automatically takes effect when changes in ambient noise are detected. No manual settings are required. Actual call experience may vary depending on usage habits, environmental factors, and app capabilities.
- ANC: Active Noise Cancellation.
- Data comes from Huawei lab frequency range tests conducted under the L2HC/LDAC™ HD audio codec for Bluetooth connections.
- The earbuds support up to 2.3 Mbps of lossless audio transmission when connected to a HUAWEI Mate X6 phone running EMUI 15 or a later version. The 2.3 Mbps transmission capability is certified by HWA. This feature is only available on certain phone models running certain operating systems.
- L2HC 4.0 is only available on HUAWEI phones/tablets running EMUI 15 or a later version.
- Data comes from Huawei labs.
- Data comes from Huawei labs, and is a comparison with the HUAWEI FreeBuds Pro 3. Actual performance may vary by individual. The Shape-Memory Foam ear tips for HUAWEI FreeBuds Pro 4 come in three sizes. You can perform a tip fit test to select the size that best fits your ears for optimal noise cancellation performance.
- If no ear tip type is selected after the ear tips are replaced, the earbuds will detect the ear tips in use as soon as the earbuds are placed in the charging case, and adjust the optimal noise cancellation parameters accordingly. Noise cancellation parameter switching accuracy within 24 hours of earbuds being placed in the charging case is as high as 99%. Data comes from Huawei labs. ANC: Active Noise Cancellation.
- This feature is only available after an OTA update.
- Multi-device connection is only available on certain EMUI devices running EMUI 13 or later.
- Data comes from Huawei lab.
- Data comes from Huawei labs, and applies to HUAWEI phones running EMUI 15 or a later version. Service life is based on simulated ageing tests, and refers to the number of days that the battery capacity is 20% lower. Test conditions: 0.6 charging cycles each day, which aligns with typical usage habits.
- This feature is only available on models running EMUI 10.0 or later.
